HOW to convert '2d' to 'GEO2D' type in xarrray?

Question

When I used the MODIS data,I got a problem about the Type.

I got the coord by xarray(python 3.9),but I couldn't get the same type as 'GEO2D'.

xr_tmp = xr.Dataset(
{
    'Gpp_500m'      :  (('XDim', 'YDim','time'), Gpp_500m),
    'Npp_500m'      :  (('XDim', 'YDim','time'), Npp_500m),
    'Npp_QC_500m'   :  (('XDim', 'YDim','time'), Npp_QC_500m),
},
coords=dict(
    lon = (['XDim', 'YDim'],lon),
    lat = (['XDim', 'YDim'],lat),
    time = _time_
    # 'latitude': lat,
    # 'longitude': lon,
    # 'time': _time_,
)
)

The figures are shown bellow,Could U help me? (use xarray or pyModis if necessary)

You can see the difference from the pictures as follow.